Treatment system and method for heavy metal contaminated soil

Abstract

The invention relates to a treatment system and method for heavy metal contaminated soil. According to the treatment system and method for the heavy metal contaminated soil, the contaminated soil is screened according to different particle diameters through a trommel in a clay-pigeon shooting field, and the screened contaminated soil is purified in a chemical and electric mode. Contaminated soil screening equipment comprises a contaminated soil supply device, the trommel, a first jig, second jigs, a third jig, a first spiral classifier, a second spiral classifier, a third spiral classifier, a fourth spiral classifier, a fifth spiral classifier, a sixth spiral classifier, a first cyclone for classification, a second cyclone for classification, a callow cone, a first conditioning tank, a second conditioning tank and a settling tank. The contaminated soil screening equipment is used for screening the contaminated soil according to the sizes; contaminated soil purification equipment is used for purifying the contaminated soil screened by the contaminated soil screening equipment in the chemical and electric mode; and water treatment equipment is used for treating water used by the contaminated soil screening equipment and the contaminated soil purifying equipment for water recycling.

Description

technical field [0001] The technical field of the present invention relates to a system and method for the treatment of heavy metal contaminated soil, in particular to a method for screening contaminated soil according to different particle sizes using a trommel in a flying saucer shooting range including shotguns, heavy metals and flying saucer fragments, and chemically and electrically A system and method for treating heavy metal contaminated soils in which the screened contaminated soils are purified. Background technique [0002] A clay-pigeon shooting range with multi-directional trap shooting and skeet shooting items is a type of shooting range that emits a 11cm-diameter called claypigeon into the air. After the target, a shotgun with multiple bullets (lead bullets) placed in it is used to hit the arena where the flying saucer is discharged. Therefore, the soil of the flying saucer shooting range includes shotguns (lead bullets), heavy metals (including fine particles)...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned existing heavy metal-contaminated soil treatment system has the following disadvantages: unlike the soil polluted by oil and other pollutants, especially for the polluted soil of the flying saucer shooting range, that is, the soil polluted by heavy metals does not have a clear treatment method

Moreover, the existing heavy metal-contaminated soil treatment systems also have the following disadvantages: Although physical treatment, chemical treatment, thermal assembly and disassembly, plant purification, etc. are used, their scope of application is extremely limited

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